is GZipped - Java File Path IO

Java examples for File Path IO:GZIP

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Description

is GZipped

Demo Code

/*******************************************************************************
 * Copyright/*from  www .jav a 2  s  . c o m*/
 *   2012 axYus - www.axyus.com
 *   2012 P.Renier - paul.renier@axyus.com
 *
 * This file is part of XEMELIOS.
 *
 * XEMELIOS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * XEMELIOS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with XEMELIOS; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *******************************************************************************/
//package com.java2s;
import java.util.zip.GZIPInputStream;

public class Main {
    public static boolean isGZipped(byte[] data) {
        if (data == null || data.length < 2) {
            return false;
        }

        int head = ((int) data[0] & 0xff) | ((data[1] << 8) & 0xff00);
        return (GZIPInputStream.GZIP_MAGIC == head);
    }
}

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